This is an article about yoga for large people:
http://www.sallypugh.org/substance04.pdf
A woman who teaches large people yoga:
http://www.sallypugh.org/body2.htm
A Gentle Way Yoga for Plus Sizes in San Diego:
http://www.agentleway.com/largerwomen.html
http://www.sizewise.com/docs/yoga.html
http://www.yogajournal.com/practice/1138
Fat So What website:
http://www.fatso.com/
http://theamericanfatso.com/Step1Simple.htm
http://www.radiancemagazine.com/issues/1995/winter95_ghaddon.html